GPS-20 Operating Manual
Rikaline
Rikaline
Marketing Corp.
5F-1, 125, Roosevelt Road, Sec. 5, Taipei, Taiwan 116
Tel: ++886 2 2934 5456 Fax: ++886 2 2934 4373 E-Mail:
web:
www.rikaline.com.tw
12
4.1.2 Geographic Position with Latitude/Longitude (GLL)
Table 4-4 contains the values for the following example:
$GPGLL,3723.2475,N,12158.3416,W,161229.487,A*2C
Table 4-4
GLL Data Format
Name Example
Units
Description
Message ID
$GPGLL
GLL protocol header
Latitude
3723.2475
ddmm.mmmm
N/S Indicator
N
N=north or S=south
Longitude 12158.3416
dddmm.mmmm
E/W Indicator
W
E=east or W=west
UTC Position
161229.487
hhmmss.sss
Status
A
A=data valid or V=data not valid
Checksum *2C
<CR> <LF>
End of message termination
4.1.3 GNSS DOP and Active Satellites (GSA)
Table 4-5 contains the values for the following example:
$GPGSA,A,3,07,02,26,27,09,04,15, , , , , ,1.8,1.0,1.5*33
Table 4-5 GSA Data Format
Name Example
Units
Description
Message ID
$GPGSA
GSA protocol header
Mode 1
A
See Table 5-6
Mode 2
3
See Table 5-7
Satellite Used (1)
07
Sv on Channel 1
Satellite Used (1)
02
Sv on Channel 2
……
….
Satellite Used
Sv on Channel 12
PDOP
1.8
Position Dilution of Precision
HDOP
1.0
Horizontal Dilution of Precision
VDOP
1.5
Vertical Dilution of Precision
Checksum
*33
<CR> <LF>
End of message termination
(1) Satellite used in solution.
Table 4-6 Mode 1
Value Description
M
Manual—forced to operate in 2D or 3D mode
A
2D Automatic—allowed to automatically switch 2D/3D
Table 4-7 Mode 2
Value Description
1
Fix Not Available
2 2D
3 3D
4.1.4 GNSS Satellites in View (GSV)
Table 4-8 contains the values for the following example:
